.tinhoc a, .vanhoc a, .tienganh a, .tinhcam a, .kinhte a, .thuongmai a{
    float: left;
    margin-top: 20px;
    margin-left: 40px;
    text-align: center;
    text-decoration: none;
    color: blue;
}
.tinhoc a:hover, .vanhoc a:hover, .tienganh a:hover, .tinhcam a:hover, 
.kinhte a:hover, .thuongmai a:hover{
    color: red;
    text-decoration: underline;
}

/*
    info
*/
ul.nav{margin-left: 270px;}
ul.nav{overflow: hidden; padding: 0px;}
ul.nav li{display: inline; float: left; margin: 0px 5px; background: #8AB1FE;}
ul.nav li a{color: white; text-decoration: none; display: block; padding: 3px 8px;}
ul.nav li:hover {background: #3A7ABE;}
ul.nav li.current{font-weight: bold; padding: 3px 8px;}

/*
    viewone
*/
div.viewinfo{
    margin-top: 20px;
    margin-bottom: 20px;
    width: 980px;
}
div.image{
    float: left;
    width: 250px;
}
div.viewcontent{
    float: left;
    margin-left: 5px;
    width: 725px;
}
div#infosach{
    width: 100%;
    font-family: Arial;
    font-size: 15px;
    margin-left: 25px;
}
div#infosach p.gia{
    color: #990033;
}

/*
    add_product
*/
div#add_any input{
    border: 0.1em solid #fd8f25;
}